TWM602594U - Magnetic pump structure without shaft seal - Google Patents

Abstract

A shaft-sealed magnetic pump structure includes an outer casing mounted with an impeller, the impeller is driven by a magnetic driven shaft, the outer casing includes a water inlet and a water outlet arranged on the outer peripheral ring of the outer casing, and is characterized in that: The outer shell is composed of a mounting seat and a cover, and defines a chamber for accommodating the impeller, so as to have the advantage of convenient assembly.

Description

Sealless magnetic pump structure

This creation is about an improved structure of a shaft-sealed magnetic pump, which has the effect of convenient assembly.

The drive shaft of the sealless magnetic pump drives the driven shaft inside the pump through magnetic force, and drives the liquid inside the pump body to flow in a specific direction. One of the commercially available pump bodies has the following structure. The pump body is a cylindrical chamber composed of a base, a ring side wall and a cover. The base and the cover are provided with a rotating shaft for positioning the impeller. The other side is provided with a driven shaft driving impeller, and the annular side wall is provided with a water inlet and a water outlet to communicate with an external pipeline. This kind of water pump body has many components, which is not conducive to assembly and replacement, and it is also necessary to consider the sealing performance after assembly.

This creation provides a shaft-sealed magnetic pump structure, which includes an outer casing mounted with an impeller, the impeller is driven by a magnetic driven shaft, the outer casing includes a water inlet and a water outlet arranged on the outer peripheral ring of the outer casing, It is characterized in that the outer shell is composed of a mounting seat and a cover, and defines a chamber for accommodating the impeller. Accordingly, it has the advantage of convenient assembly.

In addition, at least one of the impeller and the outer shell is made of a plastic selected from polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene (PP), and Teflon (PTFE) , At least one of the group consisting of PVDF, PETF, and PEEK. The pump body can be used to handle corrosive liquids and can be used in the chemical industry.

In addition, the magnetic driven shaft of the impeller has an inner rotor and an isolation cover to close the inner rotor, the isolation cover is selected from polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene (PP) ), at least one of the group consisting of Teflon (PTFE), Steel Flon (PVDF), Super Steel Long (PETF), and Polydiether Ketone (PEEK). In this way, even if corrosive liquid accidentally flows into the magnetic drive shaft and the magnetic driven shaft, the liquid can prevent the inside of the device from corroding and improve durability.

Please refer to FIGS. 1 to 2, which illustrate a shaft seal-less magnetic pump structure, including a motor body 10 and a pump body 20. One side of the motor body 10 has an outer rotor 15 as a magnetic drive shaft. The pump body 20 has a fixing seat 26, one side of the fixing seat 26 has a magnetic driven shaft adjacent to the motor body 10, the magnetic driven shaft has an inner rotor 21 and an isolation cover 25 sleeved on the inner rotor 21. During installation, the outer rotor 15 with a cylindrical shell is sleeved on the magnetic driven shaft, so that the inner rotor 21 is driven by the magnetic field of the outer rotor 15 to rotate synchronously.

The other side of the fixing seat 26 of the pump body 20 has an outer casing 40. The outer casing 40 is composed of a mounting seat 41 and a cover 42. The mounting seat 41 is disposed on the fixing seat 26, and the cover 42 is then mounted on the mounting seat 41. On one side and away from the magnetic driven shaft, the outer shell 40 forms a liquid-conveying chamber. In addition, the mounting side of the cover 42 is also provided with a waterproof member 423, so that the contact surface between the cover 42 and the mounting seat 41 is sealed. Accordingly, the user only needs to lock the mounting seat 41 and the cover 42 to complete the assembly of the outer casing 40 of the pump body 20, which has the advantage of convenient assembly.

In this embodiment, two impellers 461, 462 are installed inside the chamber of the outer casing 40, and the mounting seat 41 is provided with shaft holes 451, 452 to install the impellers 461, 462, respectively. The transmission shaft of the impeller 461 is driven by the magnetic driven shaft to rotate. The impellers 461 and 462 have a plurality of teeth that can mesh with each other. Therefore, the impeller 462 can be driven by the impeller 461 to rotate. However, there may be only one impeller inside the chamber.

In this embodiment, the outer peripheral wall 421 of the cover 42 has a water inlet 424 and a water outlet 425 communicating with the chamber for communicating with an external pipeline, and the flow direction of the water inlet 424 and the water outlet 425, and the impeller 461, 462 The rotating shafts are roughly on the same straight line. According to this, the internal liquid can flow in a specific direction through the rotation of the impellers 461 and 462. However, the water inlet 424 and the water outlet 425 can also be respectively arranged on the mounting seat 41 and the cover 42 and communicate with the internal chamber, and similar effects can also be achieved.

In addition, at least one of the isolation cover 25, the impellers 461, 462, and the outer housing 40 is composed of an engineering plastic, which can be selected from polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene (PP), At least one of the group consisting of Teflon (PTFE), Steel Flon (PVDF), Super Steel Long (PETF), and Polydiether Ketone (PEEK). In this embodiment, based on cost considerations, the material of the isolation cover 25 is polypropylene, and the material of the impellers 461 and 462 and the outer casing 40 is Teflon (PTFE). Accordingly, the pump body 20 can be used to transport corrosive liquids. Even if the corrosive liquid accidentally flows into the magnetic drive shaft and the magnetic driven shaft, it can be isolated by the isolation cover 25 to prevent the liquid from corroding the inside of the magnetic driven shaft. , Improve durability.

10: Motor body 15: Outer rotor 20: pump body 21: inner rotor 25: Isolation cover 26: fixed seat 40: outer shell 41: Mounting seat 42: Lid 421: Peripheral Wall 423: Waterproof parts 424: Inlet 425: water outlet 451,452: Shaft hole 461,462: Impeller

Figure 1 is an external view of the structure of a shaft sealless magnetic pump.

Figure 2 is an exploded view of the components of the shaft sealless magnetic pump structure.

10: Motor body

15: Outer rotor

20: pump body

21: inner rotor

25: Isolation cover

26: fixed seat

40: outer shell

41: Mounting seat

42: Lid

421: Peripheral Wall

423: Waterproof parts

424: Inlet

425: water outlet

451,452: Shaft hole

461,462: Impeller

Claims (5)

A shaft-sealed magnetic pump structure includes an outer casing mounted with an impeller, the impeller is driven by a magnetic driven shaft, the outer casing includes a water inlet and a water outlet arranged on the outer peripheral ring of the outer casing, and is characterized in that: The outer shell is composed of a mounting seat and a cover body, and the mounting seat and the cover body define a chamber for accommodating the impeller. The shaft sealless magnetic pump structure according to claim 1, wherein the outer casing has another impeller, and the impeller drives the other impeller. The shaft-sealed magnetic pump structure according to claim 1, wherein the cover body is provided with the water inlet and the water outlet. The shaft sealless magnetic pump structure according to claim 1, wherein at least one of the impeller and the outer shell is made of a plastic selected from polyvinyl chloride (PVC) and chlorinated polyvinyl chloride (CPVC) , Polypropylene (PP), Teflon (PTFE), Steel Flon (PVDF), Super Steel Long (PETF), at least one of the group consisting of Polydiether Ketone (PEEK). The shaft-sealed magnetic pump structure according to claim 1 or 4, wherein the magnetic driven shaft has an inner rotor and an isolation cover to close the inner rotor, and the isolation cover is made of polyvinyl chloride (PVC), chlorine At least one of the group consisting of polyvinyl chloride (CPVC), polypropylene (PP), Teflon (PTFE), steel fluorine (PVDF), super steel dragon (PETF), polydiether ketone (PEEK) .

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